Wichita eagle., 1887-09-30
the width between curbs to depth Of three
inches in addition to the gutter capacity it


| self
The crown of twelve inches upon paved
streets will shed water rapidly and insure g
| thorough cleansing of the surface.
With the prevailing uniform level streets
| IN the city no excessive CO lection Of water
can ensue In any locality.
In streets not paved the crown should b.
fully Gig hteen inches above the gutter to in.
sure concentration os flow and protection
against mud
The cutters need not be any deeper than
already cited. In cities with steep hilly
streets alternating with level ones, surface
drainage upon such plan would not be
prac ical as the rapid flow from the hills
checked by fiat grade would result in a
large accumulation Of water st the foot OF
the slopes, that could not help damaging
property.
Should, however, any section of the city in
its futu growth develop SO as to make Sur
face drainage desirable by an underground
conduit. il con be more cheapiy done by an
Independent sewer fres from sewage con-
taminatioD, as in such case it can be placed
nearer the surface and it's artificial grade
can be improved more readily.
Such sewers should, however, be connected
with the wire above high water mark to pre-
vent sedimentary posts, which un ess
promptly removed by hand wou choke
up the sewerage and be difficult of cleansing
The Topeka avenue sewer already laid
down by the city, though not laid TO exact
grades that ths moderate fall would
cafl for in good practice, can be utilized for
many years for surface dIainsge
IL will, however, require periOdi cal cleans
ing to insure Efficient O. Grafton.
All house sewage and waste pipe connect
ions to this sewer should, however, for sani-
tary reasons be disconnected as soon as a
sanitary sewer is provided
~ tk-,, r,x4 Ia-f ~
action for he disposal Of storm waters, we
now come to the co slderation OF
THE SEPARATE SYSTEM
Of sewers which we have con-
cluaed upon as the mos,
suitable from sanitary and financial consid-
erations for the city of Wichita.
The features OF the Sytem briefly outlined
may be summarized as follows: A system
OF !aterals sewer pipes of yitrfied clay, with
a sat glazed Tuner surface of diameter OF
eight iuces, laid to grades of q fall Of ore in
four hundred, or In other words three inches
per hundred feet.
These laterals are provided at their upper
ends with automatic flushing devices where
by each line Of plps will be flushed with
about two hundred aid fifty gallons of
water, two or more times each day to insure
the discharge of all matter into the mains
before decomposition can take place.
These liues viii be thoroughly ventilated
by inlets Of air through perforated iron COW
erS or Elan-hOles, 10 be located along their
lines at an average of alb Tut four hundred
feet apart, and by the medium of connec citing
soil pipes from houses taat extend above the
roof.
TIE man-holes thus subserve the double
purpose of cir inets as well as mediums of
access to the sewer for cleansing or other
purposes.
The system Of mains that carry the dis
charged sewage from these laterals will be
fifteen inches in diameter at the upper ends
and gradually enlarge as they receive more
inletS, attaining diameter Of three feet at
the ootfall.
50 much of the mains as exceed two feet
will necessarily be of brick work set in Port
land cement mortar.
All the lateral sewers will have
junction Us placed in them to the
rig ht and left every twenty-five feet to
admit of connections without cutting pipes
The grades attained for the maius through
out to the outfall owing to The directions Of
th1ir course are uniformly four feet per
mile, er nearly one in thirteen hundred
The outfaIl is above high water level Of the
river, thus insuriIg the sewer against back
water.
The mains in their course through the city,
as will be noted upon the profiies. will be
suffi tiently low at points to admit of flushing
by the opening Of food gates connected wi h
the river and Chisholm creek.
In addition to this there are special flush
ing gates provided at several points OF the
mains whereby the sewage may be held back
and suddenly let loose for self flushing pur-
poses.
Briefly outlined the sewers embrace in the
system designed by Us are as follows: Be
ginning with the on fall at Oh sholm creek,
below the Atchison, Topeka & Santa Fe ra l.
way crossing, ane about one-haif mile above
i S junction vi b the Arkansas river, with q
diameter of three feet; thence northwesterly
along the right Of way Of said railway COM
pany to the intersection of Washington
street, thence with the same diameter north
on Washington street to Lincoln avenue az
gregatina two and one-half miles
From this point with diameter of thirty
four inches, the main extends to Kellogg
street, a distance Of one halt mile here it is
reduced to thirty-two inches in dian eter and
extends with those dimensions one-half a
mile to the alley north of Douglas street
From Douglas avenue to Central av-
diameter from Central avenue to Park
str. ct, the sewer has diameter OF twenty
six inches, and from Park to Thirteenth
street i diameter is twenCy-four inches.
The branch or sub-msins forming a base
for intercepting the alley laterals are fifteen
inches in diameter.
The fifteen-inch pipes, as also those of
twent four inch diameter, will be Of vitri-
fed clay, with salt glaze finish
Summarized, the system viii cost, when
as follows:
Mains from outfal to Thirteenth
street, being five miles in length. 8 70 sos
1319 miles. ....... S4, S33
sl5s,74l
superintendent and
contingencies, 10 per cent. 1854
Total cost of mains .sl74,6l5
Laterals, 66 2-10 miles, in
elusive of man-holes and
nush tanks. ...........- SlI3, AIS
Ten per cent. contingent
cies, ETC. Commemorate. 1884 $3.50, 759
Total, 81 40 miles, cost
ing. completed ." $685., S74
The detail estimates of the entire work
accompany the plans and specifications here |
with submitted as noted the cost of con-
tructing the mains, sub-maius and their ap- |
,urtenancss aggregates very nearly the cost |
If the entire lateral system
1t would be impracticable to construct the !
ateral, as districted with first having the |
mains to connect them with.
1t would seem reasonable and certainly |
Quita ole to build tn ir mains and sub mains |
It the general expense 81 the city, as all par
les are eQusllg benefited
The laterals could then be taxed by dis
riots per foot frontage OF property.
Should the construction of the entire sys-
EN- be deter mined upon and be taxed equally |
'gainst ali property alike, the rate per foot
would be about 81 cents pr foot or
Ipout s31 per fifty foot lot. On
he other hand If the city should |
.uild the mairs and submains, then the tar
OF lateral sewers would be about 50 cents
,ar front foot or sic so per each fly foot !